[Her automatic concern seems to be proven justified just by that tone. Naminé's already got some inkling of what's coming next - not the specifics of it, but that there's something bothering Nakama - even before the actual words come out. She lets out a very quiet sigh afterward (it's not a difficult guess at all, no,) then,]

I'm sorry. But it would be very dangerous-- for anyone. [Except of course Nakama knows that.] If anything, you're able to help more people here - there aren't any distractions. And-- you've already got the chance to do so much good right where you are. [But she'd be lying to say that she didn't think about things like that, too, about the people out there on the front lines who haven't or won't make it back to the Arena in the first place. There are enough of those who are in mortal peril who did make it to the Arena, and it makes Naminé's stomach turn to think how many there must be who didn't.]